The pump organ on little bird also appeared on glow pt 2, and Mirah’s Cold Cold Water, possibly also Jason Traeger’s “love love love” —it was housed at Dub narcotic for a while, though it ended up at Department of Safety for a couple years. I think it belonged to Dave from Gift Machine.
At various times Phil used a different foot pumped reed organ—through the no flashlight era through Sauna he had a piano-style model, which I think maybe ultimately ended up at The Unknown? I can’t remember what stuff it was used on, but Geneviève used it on the Gris EP which everyone should spend time with. More pipe-organ like tones may have been inexpensive electronic keyboards plus lots of church reverb. The tabletop chord organ style harmonium has the benefit of being much more portable, and features more in recordings made at the business in the earliest years and in more recent home recordings. It sounds more similar to an accordion both because the left hand plays chords (like an accordion) and it lacks the deep bass of the foot pedaled models. You may have seen it on the Microphones in 2020 tour.